destroy the thieves guild is an awesome mod on the nexus, if you want to kill them off and you can also kill Maven Blackbriar;; if you use this mod-be sure to read up how the mod works, certain things have to happen at certain times. have fun

your profile tells me you are new to the awesome game of Skyrim, i recommend you play the Vanilla game of Skyrim first, and the only mods you should use are the unoffical patch's for Skyrim and her D.L.C.'s. the thieves guild questline is long and boring-about 50 jobs to do before you become leader of the thieves guild

I assume you mean the various Jobs from Vex & Delvin? Do 5 of those (you can do one from each of them at the same time, which speeds things up) in Whiterun, Windhelm, Solitude or Markarth and you'll get a special quest from Delvin for that city. Do that quest and 3 very nice Thief Cache barrels will show up around the town and the Cistern'll look nicer. For Windhelm (as long as you choose the right options) and Markarth, you'll also gain access to a fence to sell your stolen goods.

The main Guild storyline will give you 5 more fences (as long as you don't kill Gulum-Ei and talk to again once your final storyline conversation happens and do Tonilia's quest after three special missions from Delvin), bringing you to a total of 8 fences (though three are luck-based to encounter, so can't be relied upon) who have *4000* gold limits, making them the best merchants in the game.

Unless you're heavily into RPing in Skyrim, heading to Riften and joining the Thieves' Guild is probably one of the best things you can do with your character, especially if you craft...

As you do more quests and get those right 5 quests done in a city, a special quest will pop up from Delvin. Complete that one and a new merchant will appear in the Cistern. Eventually 4 specials are done and 4 merchants. Makes the theives guild the best place to get rid of high value loot.

They will put some coin in your pocket early on. Other than that, I hate the thieves guild. Most of the members suffer from the " run your mouth" disease. It make me want to stick a sword in their pie hole.Maybe I have anger issues.....

The Thieves Guild side quests are HOW YOU GET TO BE GUILD MASTER! If you think you're the guild master just because you defeated whats-his-face, think again! You need to do five jobs in each city, with a special quest for each one, and you get your actual promotion and fancy uniform.

Yeah, but being Guild Master only gives you mediocre armor (especially if you're not a Smith and therefore can't improve it to make it tolerable) and a loot chest that doesn't give much useful and which only restocks if you stay away from the Cistern for a looooong time so that the place resets (10 in-game days?), a pain if you regularly return with loot for Tonilia...